redlistr: Tools for the IUCN Red List of Ecosystems and Species

A toolbox created by members of the International Union for
Conservation of Nature (IUCN) Red List of Ecosystems Committee for
Scientific Standards. Primarily, it is a set of tools suitable
for calculating the metrics required for making assessments of species and
ecosystems against the IUCN Red List of Threatened Species and the IUCN Red
List of Ecosystems categories and criteria. See the IUCN website for
detailed guidelines, the criteria, publications and other information.